/*
   IGraph library.
   Copyright (C) 2007-2022  The igraph development team

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 2 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program; if not, write to the Free Software
   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
   02110-1301 USA
*/

#ifndef REST_GML_TREE_H
#define REST_GML_TREE_H

#include "igraph_decls.h"
#include "igraph_types.h"
#include "igraph_vector.h"
#include "igraph_vector_ptr.h"

__BEGIN_DECLS

typedef enum { IGRAPH_I_GML_TREE_TREE = 0,
               IGRAPH_I_GML_TREE_INTEGER,
               IGRAPH_I_GML_TREE_REAL,
               IGRAPH_I_GML_TREE_STRING,
               IGRAPH_I_GML_TREE_DELETED
             } igraph_i_gml_tree_type_t;

typedef struct igraph_gml_tree_t {
    igraph_vector_ptr_t names;
    igraph_vector_char_t types;
    igraph_vector_ptr_t children;
    igraph_vector_int_t lines; /* line numbers where names appear */
} igraph_gml_tree_t;

igraph_error_t igraph_gml_tree_init_integer(igraph_gml_tree_t *t,
                                            const char *name,
                                            igraph_integer_t line,
                                            igraph_integer_t value);
igraph_error_t igraph_gml_tree_init_real(igraph_gml_tree_t *t,
                                         const char *name,
                                         igraph_integer_t line,
                                         igraph_real_t value);
igraph_error_t igraph_gml_tree_init_string(igraph_gml_tree_t *t,
                                           const char *name,
                                           igraph_integer_t line,
                                           const char *value);
igraph_error_t igraph_gml_tree_init_tree(igraph_gml_tree_t *t,
                                         const char *name,
                                         igraph_integer_t line,
                                         igraph_gml_tree_t *value);
igraph_error_t igraph_gml_tree_init_empty(igraph_gml_tree_t *t);
void igraph_gml_tree_destroy(igraph_gml_tree_t *t);

void igraph_gml_tree_delete(igraph_gml_tree_t *t, igraph_integer_t pos);
igraph_error_t igraph_gml_tree_mergedest(igraph_gml_tree_t *t1, igraph_gml_tree_t *t2);

IGRAPH_FUNCATTR_PURE igraph_integer_t igraph_gml_tree_length(const igraph_gml_tree_t *t);
IGRAPH_FUNCATTR_PURE igraph_integer_t igraph_gml_tree_find(const igraph_gml_tree_t *t,
                              const char *name, igraph_integer_t from);
IGRAPH_FUNCATTR_PURE igraph_integer_t igraph_gml_tree_findback(const igraph_gml_tree_t *t,
                                  const char *name, igraph_integer_t from);
IGRAPH_FUNCATTR_PURE igraph_i_gml_tree_type_t igraph_gml_tree_type(const igraph_gml_tree_t *t, igraph_integer_t pos);
IGRAPH_FUNCATTR_PURE const char *igraph_gml_tree_name(const igraph_gml_tree_t *t, igraph_integer_t pos);
IGRAPH_FUNCATTR_PURE igraph_integer_t igraph_gml_tree_line(const igraph_gml_tree_t *t, igraph_integer_t pos);
IGRAPH_FUNCATTR_PURE igraph_integer_t igraph_gml_tree_get_integer(const igraph_gml_tree_t *t,
        igraph_integer_t pos);
IGRAPH_FUNCATTR_PURE igraph_real_t igraph_gml_tree_get_real(const igraph_gml_tree_t *t,
                                       igraph_integer_t pos);
IGRAPH_FUNCATTR_PURE const char *igraph_gml_tree_get_string(const igraph_gml_tree_t *t,
                                       igraph_integer_t pos);

IGRAPH_FUNCATTR_PURE igraph_gml_tree_t *igraph_gml_tree_get_tree(const igraph_gml_tree_t *t,
        igraph_integer_t pos);

__END_DECLS

#endif
